Introduction
AISI 409L stainless steel plate is a cost-effective, ferritic-martensitic stainless steel designed for applications requiring moderate corrosion resistance and good formability. This low-carbon variation of AISI 409 offers slightly improved corrosion resistance, particularly in specific environments.
Composition
The key elements in AISI 409L are:
Chromium (10.5 - 11.5%): Provides the base level of corrosion resistance.
Manganese (1% - 1.5%): Contributes to strength and hardness.
Nitrogen (0.05% - 0.15%): Improves strength and formability.
Low Carbon (Less than 0.03%): Minimizes the risk of chromium carbide precipitation during welding, enhancing weldability and reducing the possibility of intergranular corrosion around the weld zone.
Characteristics
Cost-Effective: A major advantage of AISI 409L is its affordability compared to higher chromium content stainless steels.
Moderate Corrosion Resistance: While not as corrosion-resistant as standard austenitic stainless steels like 304. 409L offers adequate protection in mildly corrosive environments, especially indoors. Proper surface finishing and maintaining cleanliness are crucial for optimal corrosion resistance.
Good Formability: AISI 409L exhibits good formability, allowing for shaping and drawing during fabrication. This characteristic makes it suitable for applications requiring moderate bending and forming.
Weldability: AISI 409L can be welded, but due to its higher manganese content and ferritic-martensitic structure, it's more susceptible to weld decay compared to austenitic steels. Special welding procedures and post-weld heat treatment might be necessary to maintain corrosion resistance in critical applications.
Magnetic: AISI 409L is magnetic in all conditions.
Strength and Hardness: AISI 409L offers moderate strength and hardness compared to other stainless steels. These properties can be further enhanced through cold working.
Uses
Due to its affordability, decent formability, and moderate corrosion resistance, AISI 409L stainless steel plate finds application in various industries, including:
Automotive Parts: Wheel trims, exhaust system components, and decorative trim can be made from 409L due to its formability and affordability.
Appliance Parts: Washing machine parts, dishwasher interior components, and appliance trim can benefit from the cost-effectiveness and formability of 409L. However, for components with high moisture exposure, other materials like 304 might be a better choice.
Building Materials: Certain architectural panels, roofing elements, and enclosures can utilize 409L for its affordability and workability, especially in less demanding environments.
Hardware: Applications such as screws, fasteners, and brackets can benefit from the affordability and formability of 409L, considering the environment and expected corrosion resistance.
| Product Name | AISI 409L stainless steel plate | |
| Commodity | Austenitic, Ferritic, Martensitic, Duplex, Cold rolled, Hot rolled | |
| Grade | 201. 202. 301. 304. 304L, 347. 321. 309S, 310S, 316L,2205. 409.410. 410S, 420. 420j1. 420j2. 430. 439. 443. 444.32760.32750.904L etc | |
| Austenitic stainless steel | 200 Series: 201. 202 | |
| 300 Series: 304. 304L, 309S, 310S, 316. 316L, 316Ti, 317L, 321. 347 | ||
| Ferritic stainless steel | 409L, 430. 436. 439. 441. 444. 446 | |
| Martensitic stainless steel | 410. 410S, 416. 420J1. 420J2. 431.440.17-4PH | |
| Duplex and Special Stainless: | S31803. S32205. S32750. 630. 904L | |
| Standard | ISO, JIS, ASTM, AS, EN, GB,DIN, JIS etc | |
| surface | N0.1. N0.4. 2D, 2B, HL, BA, 6K, 8K, etc | |
| Delivery time | 3-15 days subject to the clients' requirement and quantity | |
| Package | clients' requirement and Standard export sea-worthy packing | |
| MOQ | 1 ton | |
| Sample | Free Sample | |
Available Size Range
| Dimension | Range |
| Thickness | 0.1-200mm |
| Width | 10-2000mm |
| Length | 1000mm-11000mm or as customer' s requirement |
Additional Points
AISI 409L comes in various standard specifications, such as ASTM A240/ASME SA240. which define its dimensions and tolerances.
When selecting between 409L and other stainless steel grades, consider the specific application's environment, formability requirements, and budget constraints. For superior corrosion resistance, austenitic steels like 304 or 316 might be preferable.
